When we speak of prayer or of the results of prayer we always imply only one kind of prayer — petition, or we think that petition can be united with all other kinds of prayers.… Most prayers have nothing in common with petitions. I speak of ancient prayers; many of them are much older than Christianity. These prayers are, so to speak, recapitulations; by repeating them aloud or to himself a man endeavors to experience what is in them, their whole content, with his mind and his feeling.

In Search of the Miraculous (1949)